Re: [Xen-devel] [PATCH v2 3/3] xen/swiotlb: remember having called xen_create_contiguous_region()

[Juergen Gross <jgross@xxxxxxxx>]

On 31.05.19 13:38, Juergen Gross wrote:
> On 30/05/2019 14:46, Boris Ostrovsky wrote:
> > On 5/30/19 5:04 AM, Christoph Hellwig wrote:
> > > Please don't add your private flag to page-flags.h.  The whole point of
> > > the private flag is that you can use it in any way you want withou
> > > touching the common code.
> >
> > There is already a bunch of aliases for various sub-components
> > (including Xen) in page-flags.h for private flags, which is why I
> > suggested we do the same for the new use case. Adding this new alias
> > will keep flag usage consistent.
> What about me adding another patch moving those Xen private aliases
> into arch/x86/include/asm/xen/page.h ?
This is becoming difficult.

I'd need to remove the "#undef PF_NO_COMPOUND" from page-flags.h or to
#include a (new) xen/page-flags.h from page-flags.h after all the
defines are ready. Is that really worth the effort given that other
components (e.g. file systems) are doing the same?


Juergen

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